Cant seem to find a good carb or is it something else?? - Team Camaro Tech
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post #1 of 3 (permalink) Old Sep 8th, 11, 10:06 AM Thread Starter
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Cant seem to find a good carb or is it something else??

Hey guys I have a problem with my corvette ( I know this is camaro world but I think the problem Im having can be with any car so please here me out.) I have a 66 vette that I've had 5 different carbs on and they all have a flooding and hesitation problem. the original 600 carb has a new kit in it and it floods as do almost every 600 I,ve ever had did and 3 new out of the box 670 holleys and 1 650 new holley does. They all run gas in after the engine is shut off and others blow gas out the top. I have adjusted the floates which helps for a little while then it happens again and mind you the float level is way lower than the sight plug hole. the fuel pressure is 5 Lbs and is a stock fuel pump. anyone with any Ideal of what might be causing this I,m listing. keep in mind I have messed around and built cars for 40 years from the ground up but this is strange. Thanks
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post #2 of 3 (permalink) Old Sep 8th, 11, 10:24 AM
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Re: Cant seem to find a good carb or is it something else??

I fought a similar problem for some time on my holley. Even tried a new carb. Turned out to be the fairly new fuel filter can. Took it off one day and found the inner filter media rattling inside. Tore it apart and saw it was coming apart and peices were getting into the needle and seat causing it to flood. It would run OK for awhile but I came to realize my trouble always seem to start after I ran it hard. My guess is the increased fuel flow flushed out filter media which lodged in the needle and seat. I replaced the filter and put the brass filters in both inlets at the carb. Been OK since.

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post #3 of 3 (permalink) Old Sep 8th, 11, 02:49 PM
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Re: Cant seem to find a good carb or is it something else??

A hesitation on acceleration could be from the float being set to low or from the accelerator pump cam being out of adjustment. You might also need to step up the primary squirter size. I had the same problem with my Holley.Run the car,shut it down and the carb would flood out and my garage would stink of gas.It would also be hard to restart after that because of the flooding.It turned out to be fuel percolation in the bowls.I actually heard it gurgling one night after I pulled in the garage and shut it down. The fuel would boil and drip out of the vents and the boosters.I bought the heat shield kit from Holley which includes the heat shield(which goes down first)and the 1/4'' thick gasket that acts as an insulator that goes on top.I bolted this on and it solved my problem. You can pick this heat shield kit up from Summit or Jegs for about 30 bucks.Hope this solves your problem.

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